31. Balance Shaft Clean and Inspect

Balance Shaft Cleaning and Inspection





1. Clean the balance shafts in solvent.
2. Remove the balance shaft front bearing carriers from the balance shafts.
3. Inspect the bearing surfaces on the balance shafts for scoring or unusual wear.
4. Inspect the balance shaft drive sprockets for wear, damage, or missing teeth. When installing new balance shaft drive sprockets tighten to 55 Nm (41 ft. lbs.).
5. Measure the rear bearing journals on the balance shafts, the journals should be 36.723 - 36.743 mm (1.4458 - 1.4466 inch) in diameter.
6. Measure the front bearing journals on the balance shafts, the front bearing journals should be 20.020 - 20.000 mm (0.7881 - 0.7874 inch) in diameter.
7. When the balance shafts have been installed in the engine block, check for smooth rotation, sticking, binding, or roughness.